What is the difference between the functions unlink and unset?

Correct Answer: By using $_SERVER['REMOTE_ADDR'], $_['HTTP_REFERER'] etc

Correct Answer: The header() function sends a raw HTTP header to a client We can use header() function for redirection of pages It is important to notice that header() must be called before any actual output is seen

Correct Answer: 1 : InnoDB provides us row level locking while MyISAM provides us table level locking 2 : InnoDB offers foreign key constraints wheres in MyISAM does not have foreign key constraints 3 : InnoDB does not have full text search wheres MyISAM provides us full text search

Correct Answer: The dba_insert() function adds a record to a database

Correct Answer: The Apache configuration file is called httpdconf

Correct Answer: sort() , rsort(), asort() ksort() , usort() arsort() , uksort() natsort() , natcasesort() array_multisort()

Correct Answer: As far PHP concern it only support single Inheritance in scripting we can also use interface to achieve multiple inheritance

Correct Answer: The mysqli extension , or as it is sometimes known, the MYSQL improved extension ,was developed to take advantage of new features found in MYSQL systems versions 413 and later The mysqli extension has a number of benfits,the key enhancements over the mysql extension being: => Object-oriented interface => Support for prepared statements => Support for multiple statements => Support for transactions => Enhanced debugging capabilities => Embedded server support

Correct Answer: PHP: Hypertext Preprocessor is open source server-side scripting language that is widely used for web development PHP scripts are executed on the server PHP allows writing dynamically generated web pages efficiently and quickly The syntax is mostly borrowed from C, Java and perl PHP is free to download and use

Correct Answer: PEAR(PHP Extension and Application Repository) is a framework and repository for reusable PHP components PEAR is a code repository containing all kinds of php code snippets and libraries PEAR also offers a command-line interface that can be used to automatically install "packages"